The defection thesis holds that members of marginalized social groups are obligated not to express views important to others in the group that are regarded by the others as substantively wrong. In this essay, I evaluate arguments that seek to vindicate the defection thesis and conclude they all fail. Then, I argue that we have reason to believe sanctioning defectors in certain ways is wrongful and that the expression of their contentious ideas is good for members of marginalized groups. We are left to conclude both that members of marginalized groups have no obligation to suppress certain heterodox views and that it is likely wrong to sanction them for expressing these views even if it were wrong for them to do so.

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